diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.18/470-MIPS-ath79-swizzle-pci-address-for-ar71xx.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.18/470-MIPS-ath79-swizzle-pci-address-for-ar71xx.patch | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.18/470-MIPS-ath79-swizzle-pci-address-for-ar71xx.patch b/target/linux/ar71xx/patches-3.18/470-MIPS-ath79-swizzle-pci-address-for-ar71xx.patch new file mode 100644 index 0000000..520c652 --- /dev/null +++ b/target/linux/ar71xx/patches-3.18/470-MIPS-ath79-swizzle-pci-address-for-ar71xx.patch @@ -0,0 +1,111 @@ +--- /dev/null ++++ b/arch/mips/include/asm/mach-ath79/mangle-port.h +@@ -0,0 +1,37 @@ ++/* ++ * Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org> ++ * ++ * This file was derived from: inlude/asm-mips/mach-generic/mangle-port.h ++ * Copyright (C) 2003, 2004 Ralf Baechle ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License version 2 as published ++ * by the Free Software Foundation. ++ */ ++ ++#ifndef __ASM_MACH_ATH79_MANGLE_PORT_H ++#define __ASM_MACH_ATH79_MANGLE_PORT_H ++ ++#ifdef CONFIG_PCI ++extern unsigned long (ath79_pci_swizzle_b)(unsigned long port); ++extern unsigned long (ath79_pci_swizzle_w)(unsigned long port); ++#else ++#define ath79_pci_swizzle_b(port) (port) ++#define ath79_pci_swizzle_w(port) (port) ++#endif ++ ++#define __swizzle_addr_b(port) ath79_pci_swizzle_b(port) ++#define __swizzle_addr_w(port) ath79_pci_swizzle_w(port) ++#define __swizzle_addr_l(port) (port) ++#define __swizzle_addr_q(port) (port) ++ ++# define ioswabb(a, x) (x) ++# define __mem_ioswabb(a, x) (x) ++# define ioswabw(a, x) (x) ++# define __mem_ioswabw(a, x) cpu_to_le16(x) ++# define ioswabl(a, x) (x) ++# define __mem_ioswabl(a, x) cpu_to_le32(x) ++# define ioswabq(a, x) (x) ++# define __mem_ioswabq(a, x) cpu_to_le64(x) ++ ++#endif /* __ASM_MACH_ATH79_MANGLE_PORT_H */ +--- a/arch/mips/ath79/pci.c ++++ b/arch/mips/ath79/pci.c +@@ -13,6 +13,7 @@ + */ + + #include <linux/init.h> ++#include <linux/export.h> + #include <linux/pci.h> + #include <linux/resource.h> + #include <linux/platform_device.h> +@@ -25,6 +26,9 @@ static int (*ath79_pci_plat_dev_init)(st + static const struct ath79_pci_irq *ath79_pci_irq_map __initdata; + static unsigned ath79_pci_nr_irqs __initdata; + ++static unsigned long (*__ath79_pci_swizzle_b)(unsigned long port); ++static unsigned long (*__ath79_pci_swizzle_w)(unsigned long port); ++ + static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = { + { + .slot = 17, +@@ -212,12 +216,50 @@ ath79_register_pci_ar724x(int id, + return pdev; + } + ++static inline bool ar71xx_is_pci_addr(unsigned long port) ++{ ++ unsigned long phys = CPHYSADDR(port); ++ ++ return (phys >= AR71XX_PCI_MEM_BASE && ++ phys < AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE); ++} ++ ++static unsigned long ar71xx_pci_swizzle_b(unsigned long port) ++{ ++ return ar71xx_is_pci_addr(port) ? port ^ 3 : port; ++} ++ ++static unsigned long ar71xx_pci_swizzle_w(unsigned long port) ++{ ++ return ar71xx_is_pci_addr(port) ? port ^ 2 : port; ++} ++ ++unsigned long ath79_pci_swizzle_b(unsigned long port) ++{ ++ if (__ath79_pci_swizzle_b) ++ return __ath79_pci_swizzle_b(port); ++ ++ return port; ++} ++EXPORT_SYMBOL(ath79_pci_swizzle_b); ++ ++unsigned long ath79_pci_swizzle_w(unsigned long port) ++{ ++ if (__ath79_pci_swizzle_w) ++ return __ath79_pci_swizzle_w(port); ++ ++ return port; ++} ++EXPORT_SYMBOL(ath79_pci_swizzle_w); ++ + int __init ath79_register_pci(void) + { + struct platform_device *pdev = NULL; + + if (soc_is_ar71xx()) { + pdev = ath79_register_pci_ar71xx(); ++ __ath79_pci_swizzle_b = ar71xx_pci_swizzle_b; ++ __ath79_pci_swizzle_w = ar71xx_pci_swizzle_w; + } else if (soc_is_ar724x()) { + pdev = ath79_register_pci_ar724x(-1, + AR724X_PCI_CFG_BASE, |